EndNote inserts citations for two nearly identical references as the same reference

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I have two references. They are:

TOWN TALK AND TABLE CHAT. (1859, 29 June 1859). Cornwall Chronicle, p. 4.

and

TOWN TALK AND TABLE CHAT. (1859, 09 July 1859). Cornwall Chronicle, p. 4.

When I go to insert the citation for the second one into my document, EndNote inserts a citation for the first one. I think this is because the title, year, newspaper name, and page number are the same (which is all that EndNote puts in the bibliography).

My list of citations in EndNote has separate entries for these two references. They are clearly different. How can I get EndNote to insert the citation for the second reference without getting it confused with the first one?

I’m using EndNote 8.1 (Bld 11010) with Word 2016 MSO 32-bit.